package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.DishFlavor;
import com.sky.entity.Setmeal;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.DishFlavorMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.result.Result;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.ArrayList;
import java.util.List;

/**
 * 功能
 * 作者 伟大哥
 * 日期 2024/12/27,14:57
 **/


@Service
@Slf4j
public class DishServiceImpl implements DishService {

    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private DishFlavorMapper dishFlavorMapper;
    @Autowired
    private SetmealDishMapper setmealDishMapper;
    @Autowired
    private SetmealMapper setmealMapper;
    /**
     * 新增菜品和口味
     * @return
     * @Param
      */
    @Override
    @Transactional
    public void saveWithFlavor(DishDTO dishDTO) {
        //向菜品表插入1条数据
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO,dish);
        dishMapper.insert(dish);
        log.info("执行到了这里");
        Long dishId = dish.getId();
        List<DishFlavor> flavors = dishDTO.getFlavors();
        if(flavors != null && flavors.size() > 0){
            flavors.forEach(dishFlavor -> {
                dishFlavor.setDishId(dishId);
            });
            //向口味表插入n条数据
            dishFlavorMapper.insertBatch(flavors);
        }
    }


    /**
     * 菜品分类查询
     * @return
     * @Param
      */
    @Override
    public PageResult pageQuery(DishPageQueryDTO dishPageQueryDTO) {
        PageHelper.startPage(dishPageQueryDTO.getPage(),dishPageQueryDTO.getPageSize());
        Page<DishVO> page = dishMapper.pageQuery(dishPageQueryDTO);
        return new PageResult(page.getTotal(),page.getResult());
    }


    /**
     * 菜品批量删除
     * @return
     * @Param
      */
    @Override
    @Transactional
    public void deleteBatch(List<Long> ids) {
        //判断当前菜品是否能够删除 ----起售中不可

        log.info("批量删除");
        for (Long id : ids) {
            Dish dish = dishMapper.getById(id);
            if(dish.getStatus() == StatusConstant.ENABLE){
                //当前菜品处于起售中
                throw new DeletionNotAllowedException(MessageConstant.DISH_ON_SALE);
            }
        }
        //判断当前菜品是否被套餐关联
        List<Long> setmealIds = setmealDishMapper.getSetmealIdsByDishIds(ids);
        if(setmealIds != null && setmealIds.size() > 0 ){
            throw new DeletionNotAllowedException(MessageConstant.DISH_BE_RELATED_BY_SETMEAL);
        }
        //删除菜品中的菜品数量
//        for (Long id : ids) {
//            dishMapper.deleteById(id);
//            //删除菜品中的口味表
//            dishFlavorMapper.deleteByDishId(id);
//        }

        //根据id批量删除
        dishMapper.deleteByIds(ids);


        dishFlavorMapper.deleteByDishIds(ids);
    }
    /**
     * 根据id查询菜品和对应的口味数据
     * @return
     * @Param
      */
    @Override
    public DishVO getByIdWithFlavor(Long id) {
        //菜品数据
        Dish dish = dishMapper.getById(id);
        //口味数据
        List<DishFlavor> dishFlavors = dishFlavorMapper.getByDishId(id);
        DishVO dishVO = new DishVO();
        BeanUtils.copyProperties(dish,dishVO);
        dishVO.setFlavors(dishFlavors);

        return dishVO;

    }

    /**
     * 根据菜品id修改口味信息和菜品基本信息
     * @return
     * @Param
      */

    @Override
    public void updateDishWithFlavor(DishDTO dishDTO) {
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO,dish);
        dishMapper.update(dish);
        //删除全部口味
        dishFlavorMapper.deleteByDishId(dishDTO.getId());

        //增加新的口味
        List<DishFlavor> flavors = dishDTO.getFlavors();
        if(flavors != null && flavors.size() > 0){
            flavors.forEach(dishFlavor -> {
                dishFlavor.setDishId(dishDTO.getId());
            });
            //向口味表插入n条数据
            dishFlavorMapper.insertBatch(flavors);
        }
    }
    /**
     * 条件查询菜品和口味
     * @param dish
     * @return
     */
    public List<DishVO> listWithFlavor(Dish dish) {
        List<Dish> dishList = dishMapper.list(dish);

        List<DishVO> dishVOList = new ArrayList<>();

        for (Dish d : dishList) {
            DishVO dishVO = new DishVO();
            BeanUtils.copyProperties(d,dishVO);

            //根据菜品id查询对应的口味
            List<DishFlavor> flavors = dishFlavorMapper.getByDishId(d.getId());

            dishVO.setFlavors(flavors);
            dishVOList.add(dishVO);
        }

        return dishVOList;
    }
    /**
     * 根据分类id查询菜品
     * @param categoryId
     * @return
     */
    public List<Dish> list(Long categoryId) {
        Dish dish = Dish.builder()
                .categoryId(categoryId)
                .status(StatusConstant.ENABLE)
                .build();
        return dishMapper.list(dish);
    }
    /**
     * 菜品的起售和停售
     *
     * @param status
     * @param id
     */
    @Transactional
    public void startOrStop(Integer status, Long id) {

        List<Long> dishId = new ArrayList<Long>();
        dishId.add(id);

        //菜品停售，则包含菜品的套餐同时停售
        if (status == StatusConstant.DISABLE) {
            List<Long> setmealIds = setmealDishMapper.getSetmealIdsByDishIds(dishId);
            if (setmealIds != null && setmealIds.size() > 0) {
                setmealIds.forEach(Id -> {
                    Setmeal setmeal = Setmeal.builder()
                            .id(Id)
                            .status(status)
                            .build();
                    setmealMapper.update(setmeal);
                });
            }
        }

        Dish dish=Dish.builder()
                .id(id)
                .status(status)
                .build();
        dishMapper.update(dish);
    }


}
